/Engine/Source/Runtime/GameplayTags/Classes/GameplayTagsManager.h
Gets a Tag Container containing the all tags in the hierarchy that are children of this tag. Does not return the original tag
A Tag Container with the supplied tag and all its parents added explicitly
[FGameplayTagContainer](API\Runtime\GameplayTags\FGameplayTagContainer) RequestGameplayTagChildren ( const [FGameplayTag](API\Runtime\GameplayTags\FGameplayTag) & GameplayTag ) const